{"thcode":3,"term":{"code":285,"name":"craters","parent":816,"scope":"Circular-shaped depressions at the summit of a volcanic core or on the surface of the land caused by the impact of a meteorite; man-made depressions caused by an explosion. [USGS GNIS Feature Class Definitions <http:\/\/geonames.usgs.gov\/domestic\/feature_class.htm>]"},"uf":[{"name":"calderas","usewith":false}],"bt":[{"code":816,"name":"physiographic features","parent":1,"scope":null},{"code":1,"name":"Categories","parent":null,"scope":null}],"nt":[],"rt":[{"code":95,"name":"basins","parent":816,"scope":"Bowl-shaped, natural depressions in the surface of the land or ocean floor. [Adapted from USGS Circ 1048]"},{"code":1209,"name":"volcanoes","parent":1208,"scope":"Vents in the surface of the Earth through which magma and associated gases erupt; also, the forms or structures, usually conical, that are produced by the erupted material. [Glossary of Geology, 4th ed.]"}]}